The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2005
Filed:
Jan. 16, 2003
Applicants:
Zili Sun, Arkadelphia, AR (US);
Carlos Zamudio, Arkadelphia, AR (US);
Inventors:
Zili Sun, Arkadelphia, AR (US);
Carlos Zamudio, Arkadelphia, AR (US);
Assignee:
Scroll Technologies, Arkadelphia, AR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C018/00 ;
U.S. Cl.
CPC ...
Abstract
A scroll compressor is provided with a non-circular back pressure chamber which is still concentric about a center axis of the compressor, such as the center axis of the drive shaft. Stated another way, an inner seal and an outer seal define a back pressure chamber. The two seals are concentric, but at least one of the seals is non-circular. In this way, reduced a back pressure chamber can be provided while still allowing the amount of orbital movement necessary for the tap for communicating a compressed refrigerant to the back pressure chamber.